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Finding the Fourth Proportional to 339,056.77, 508,750.40 and 139,437.13

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Solution

The fourth proportional to 339,056.77, 508,750.40 and 139,437.13 is: 209,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,056.77 : 508,750.40 = 139,437.13 : x
  2. Step 2: Convert to fraction form
    339,056.77/508,750.40 = 139,437.13/x
  3. Step 3: Cross multiply
    339,056.77x = 508,750.40 × 139,437.13
  4. Step 4: Simplify right side
    339,056.77x = 70,938,695,662.35
  5. Step 5: Solve for x
    x = 70,938,695,662.35/339,056.77
  6. Step 6: Final answer
    x = 209,223.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.